Not sure what your thoughts are on VQ, but I've seen a few and they look ok for the price. One of the issues we had locally when we started warbird racing was everyone was using the World Models Mustangs and it was really hard for the helpers (pylon judges) to tell one from another as they all looked alike. All of the following models would be pretty close to the same speed (around 80-90mph) with a sport .46 motor and 10x6 prop. Having a little variety (as long as there isn't a great performance difference) makes for a good show. There are others, just grabbed these quick as they looked pretty similar in size, weight, and sleekness.
http://www.vqwarbirds.com/products/aircraft/p51b.html
http://www.vqwarbirds.com/products/aircraft/mig3.html
http://www.vqwarbirds.com/products/aircraft/me109e.html
http://www.vqwarbirds.com/products/aircraft/at6.html
http://www.vqwarbirds.com/products/aircraft/mig3.html
http://www.vqwarbirds.com/products/a...rricane40.html